PPE OEM Length Replacement High Flow Up-Pipes for 2017-2021 Chevy/GMC 6.6L Duramax L5P 116122000

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Part #: 116122000 No Shipping to California
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Installation Instructions

PPE High Flow Up-Pipes 116122000 Details


GM trucks equipped with the L5P diesel are a modern marvel of engineering and design. They’re a winning combination: a powerful workhorse, with low emissions, and great styling. Unfortunately, they have been outfitted with undersized, restrictive stock up-pipes.

Now you can upgrade the L5P to achieve higher-flow by bolting on PPE OEM-Length Replacement High-Flow Up-Pipes. These direct replacements have a 46% larger flow area over stock, which results in a deeper-breathing power-plant, while maintaining the mandated Federal emissions standards of stock.

Key Features

  • Direct bolt-on replacement to factory exhaust manifolds
  • Significant reduction in exhaust back-pressure
  • 46% larger flow area over stock
  • 304 stainless steel, internally-sleeved bellows
  • Manufactured from 11 gauge 304 stainless steel
  • Faster turbo response
  • Lower exhaust temperatures
  • Kit includes driver and passenger Up-Pipes and PPE 301 Stainless Steel Up-Pipe Gaskets
  • 50 States Emissions Legal (E.O. D-701-33)
  • Replacement for GM Equivalent P/Ns: 12676611, 12688021


The PPE OEM-Length Up-Pipes are manufactured from 11 gauge 304 stainless steel. These new Up-Pipes include the superior PPE internally-sleeved bellows, also manufactured from 304 stainless steel.

This system is engineered to take the abuse of high temperatures and high pressures, while promoting increased exhaust flow and lower EGTs. A superior product for your modern marvel.


This product can expose you to chemicals which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
California Proposition 65 Notice
Verify Fitment

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